CN216599217U - Double-layer sealing structure of motor end cover - Google Patents
Double-layer sealing structure of motor end cover Download PDFInfo
- Publication number
- CN216599217U CN216599217U CN202123263423.7U CN202123263423U CN216599217U CN 216599217 U CN216599217 U CN 216599217U CN 202123263423 U CN202123263423 U CN 202123263423U CN 216599217 U CN216599217 U CN 216599217U
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- sealing ring
- end cover
- annular
- motor end
- annular grooves
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- 238000007789 sealing Methods 0.000 title claims abstract description 119
- 230000003068 static effect Effects 0.000 claims abstract description 29
- 238000009434 installation Methods 0.000 claims abstract description 14
- 239000010410 layer Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Motor Or Generator Frames (AREA)
Abstract
The application relates to a double-layer sealing structure of a motor end cover, which comprises a motor end cover, a dynamic sealing ring, a static sealing ring, an O-shaped sealing ring and a rotary shaft lip-shaped sealing ring; the inner side of the static sealing ring is provided with an installation groove and a sealing edge, the outer side of the static sealing ring is provided with an installation chamber, the O-shaped sealing ring is arranged in the installation groove, and the lip-shaped sealing ring of the rotating shaft is arranged in the installation chamber; at least two annular grooves are formed in the inner side of the sealing edge; the movable sealing ring is provided with annular teeth corresponding to the annular grooves in number, the annular teeth are meshed with the annular grooves, and air gaps with uniform width are reserved between the annular teeth and the annular grooves. The utility model discloses an annular groove and annular tooth intermeshing constitute labyrinth type seal structure to form double-deck seal structure together with rotation axis lip seal, prevent effectively that the rainwater from getting into the motor.
Description
Technical Field
The application relates to the technical field of waterproof sealing of motors, in particular to a double-layer sealing structure of a motor end cover.
Background
The high adaptability of the motor to the environment means that the motor can reliably work in the environments of wading, rain, water splashing and the like, if water enters the motor, the insulation performance of the motor is reduced, the electric strength is weakened, and therefore the motor is short-circuited and cannot work. Because the rotor rotates continuously, the sealing at the joint of the motor stator and the rotor, namely the motor end cover, is very important. The end cover of the existing motor aiming at wading, splashing and rain environment is mainly sealed by adopting a graphite gasket to realize a single-layer sealing structure, and the sealing effect is not ideal enough.
Disclosure of Invention
An object of the utility model is to provide a double-deck seal structure of motor end cover has double-deck seal structure, improves motor end cover seal effect and sealing reliability.
The utility model adopts the technical proposal that: a double-layer sealing structure of a motor end cover comprises the motor end cover, a dynamic sealing ring, a static sealing ring, an O-shaped sealing ring and a rotary shaft lip-shaped sealing ring; the motor end cover is connected with the static sealing ring through a bolt; the inner side of the static sealing ring is provided with an installation groove and a sealing edge, the outer side of the static sealing ring is provided with an installation chamber, the O-shaped sealing ring is arranged in the installation groove, and the lip-shaped sealing ring of the rotating shaft is arranged in the installation chamber; the outer diameter of the sealing edge is equal to the diameter of the rotating shaft mounting hole, and at least two annular grooves are formed in the inner side of the sealing edge; the movable sealing ring is provided with annular teeth corresponding to the annular grooves in number, the thickness of the annular teeth is smaller than the width of the annular grooves, the annular teeth are meshed with the annular grooves, and air gaps with uniform width are reserved between the annular teeth and the annular grooves.
Further, the width of the air gap is 1-1.5 mm.
Further, the number of the annular grooves is 2-5.
Furthermore, the dynamic seal ring, the static seal ring, the O-shaped seal ring and the rotary shaft lip-shaped seal ring are all made of rubber.
Further, the dynamic seal ring is in interference fit with the rotating shaft, and the inner diameter of the dynamic seal ring is 1-2 mm smaller than the diameter of the rotating shaft.
The beneficial effects of the utility model reside in that: a complex axial curve path is formed at the end cover of the motor by the mutual meshing of the annular groove on the static sealing ring and the annular tooth on the dynamic sealing ring, so as to form a labyrinth type sealing structure; the rotary shaft lip-shaped sealing ring forms an outer layer sealing structure on the outer side of the end cover, and forms a double-layer sealing structure together with the labyrinth sealing structure, so that rainwater is effectively prevented from entering the motor; the air gap can avoid the static sealing ring and the dynamic sealing ring from rubbing each other in the rotating process of the motor to generate abrasion, and the service life of the static sealing ring and the dynamic sealing ring is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic sectional structure diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the present invention;
fig. 3 is a front half-sectional view of a dynamic seal ring according to an embodiment of the present invention;
fig. 4 is a front half-sectional view of the static seal ring according to the embodiment of the present invention.
The reference signs explain: 1-motor end cover, 2-dynamic sealing ring, 3-static sealing ring, 4-O-shaped sealing ring, 5-rotating shaft lip sealing ring, 6-bolt, 7-mounting groove, 8-sealing edge, 9-mounting chamber, 10-annular groove, 11-annular tooth, 12-air gap, 13-motor rotating shaft and 14-bearing.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the present invention is not limited to the specific embodiments disclosed below.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and claims of this patent application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships are changed accordingly.
As shown in fig. 1 to 3, a double-layer sealing device for a motor end cover 1 comprises a motor end cover 1, a dynamic sealing ring 2, a static sealing ring 3, an O-shaped sealing ring 4 and a rotary shaft lip-shaped sealing ring 5; the motor end cover 1 is connected with the static sealing ring 3 through a bolt 6; the inner side of the static sealing ring 3 is provided with a mounting groove 7 and a sealing edge 8, the outer side of the static sealing ring is provided with a mounting chamber 9, the O-shaped sealing ring 4 is arranged in the mounting groove 7, and the rotary shaft lip-shaped sealing ring 5 is arranged in the mounting chamber 9; the outer diameter of the sealing edge 8 is equal to the diameter of the rotating shaft mounting hole, and at least two annular grooves 10 are formed in the inner side of the sealing edge 8; the dynamic sealing ring 2 is provided with annular teeth 11 corresponding to the number of the annular grooves 10, the thickness of the annular teeth 11 is smaller than the width of the annular grooves 10, the annular teeth 11 are meshed with the annular grooves 10, and air gaps 12 with uniform width are reserved between the annular teeth 11 and the annular grooves 10.
When the sealing device is installed, the motor rotating shaft 13, the bearing 14 and the motor end cover 1 are assembled, the movable sealing ring 2 is installed on the motor rotating shaft 13, the movable sealing ring 2 abuts against the bearing 14, the annular teeth 11 on the movable sealing ring 2 face to the outside, the O-shaped sealing ring 4 is installed in the installation groove 7, the static sealing ring 3 is fastened on the motor end cover 1 through the bolts 6, the annular teeth 11 on the movable sealing ring 2 are embedded into the annular groove 10 on the static sealing ring 3, and finally the lip-shaped sealing ring 5 of the rotating shaft is installed in the installation chamber 9. The embodiment of the utility model provides an in, dynamic seal circle 2, static seal circle 3, O type sealing washer 4 and rotation axis lip seal 5 all adopt rubber to make, dynamic seal circle 2 is interference fit with motor shaft 13, dynamic seal circle 2's internal diameter ratio 1~2mm is little to motor shaft 13's diameter, makes dynamic seal circle 2 can closely combine with motor shaft 13. A complex axial curved path is formed at the end cover 1 of the motor through the mutual meshing of the annular groove 10 on the static sealing ring 3 and the annular tooth 11 on the dynamic sealing ring 2, so that a labyrinth type sealing structure is formed; the rotary shaft lip-shaped sealing ring 5 forms an outer-layer sealing structure on the outer side of the end cover, and forms a double-layer sealing structure together with the labyrinth type sealing structure, so that rainwater is effectively prevented from entering the motor end cover 1. The air gap 12 can prevent the static sealing ring 3 and the dynamic sealing ring 2 from rubbing with each other in the rotation process of the motor to generate abrasion, and the service life of the static sealing ring 3 and the dynamic sealing ring 2 is prolonged; meanwhile, when rainwater enters the air gap 12 due to the surface tension of the liquid, the air gap 12 is narrow, so that the rainwater can be adhered in the air gap 12, and the labyrinth type sealing structure has a complex axial curved path, so that the rainwater cannot penetrate into the motor end cover 1 along the air gap 12, and the waterproof sealing of the motor end cover 1 can be effectively realized.
The O-shaped sealing ring 4 is used for realizing the sealing between the static sealing ring 3 and the motor end cover 1. According to the practical application condition, the number of the annular grooves 10 is 2-5, a proper labyrinth type sealing structure is formed, and effective sealing is formed on the inner side of the end cover. When the number of the annular grooves 10 is less than 2, the labyrinth type sealing structure is simple, the sealing effect is poor, and rainwater can still enter the end cover through the air gap 12 when the rainwater is heavy; when the number of the annular grooves 10 is more than 5, the thickness of the annular teeth 11 is small, the strength of the annular teeth 11 is low, and when the motor is impacted externally, the annular teeth 11 are easy to break and are clamped between the annular grooves 10 and the motor rotating shaft 13, so that the motor cannot work normally. In the embodiment of the present invention, the number of the annular grooves 10 is 2. Air gap 12's width is 1~1.5mm, can effectively avoid because the interval is enough mutual friction between static sealing washer 3 and the movable seal circle 2, also can avoid air gap 12 too wide, and the surface tension of rainwater can not be attached to the rainwater in air gap 12 to infiltration motor end cover 1 leads to sealed effect not good the embodiment of the utility model provides an, air gap 12's width is 1 mm.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A double-layer sealing structure of a motor end cover is characterized by comprising a motor end cover, a dynamic sealing ring, a static sealing ring, an O-shaped sealing ring and a rotary shaft lip-shaped sealing ring; the motor end cover is connected with the static sealing ring through a bolt; the inner side of the static sealing ring is provided with an installation groove and a sealing edge, the outer side of the static sealing ring is provided with an installation chamber, the O-shaped sealing ring is arranged in the installation groove, and the lip-shaped sealing ring of the rotating shaft is arranged in the installation chamber; the outer diameter of the sealing edge is equal to the diameter of the rotating shaft mounting hole, and at least two annular grooves are formed in the inner side of the sealing edge; the movable sealing ring is provided with annular teeth corresponding to the annular grooves in number, the thickness of the annular teeth is smaller than the width of the annular grooves, the annular teeth are meshed with the annular grooves, and air gaps with uniform width are reserved between the annular teeth and the annular grooves.
2. The double-layer sealing structure for the motor end cover according to claim 1, wherein the width of the air gap is 1-1.5 mm.
3. The double-layer sealing structure for the motor end cover according to claim 1, wherein the number of the annular grooves is 2-5.
4. The double-layer sealing structure of the motor end cover according to claim 1, wherein the dynamic sealing ring, the static sealing ring, the O-shaped sealing ring and the rotating shaft lip-shaped sealing ring are made of rubber.
5. The double-layer sealing structure of the motor end cover according to claim 4, wherein the dynamic sealing ring is in interference fit with the rotating shaft, and the inner diameter of the dynamic sealing ring is 1-2 mm smaller than the diameter of the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123263423.7U CN216599217U (en) | 2021-12-23 | 2021-12-23 | Double-layer sealing structure of motor end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123263423.7U CN216599217U (en) | 2021-12-23 | 2021-12-23 | Double-layer sealing structure of motor end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216599217U true CN216599217U (en) | 2022-05-24 |
Family
ID=81616092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123263423.7U Active CN216599217U (en) | 2021-12-23 | 2021-12-23 | Double-layer sealing structure of motor end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216599217U (en) |
-
2021
- 2021-12-23 CN CN202123263423.7U patent/CN216599217U/en active Active
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